package org.dragonnova.business.common.interceptor;

import java.util.Map;

import javax.servlet.http.HttpSession;

import org.springframework.http.server.ServerHttpRequest;
import org.springframework.http.server.ServerHttpResponse;
import org.springframework.http.server.ServletServerHttpRequest;
import org.springframework.web.socket.WebSocketHandler;
import org.springframework.web.socket.server.support.HttpSessionHandshakeInterceptor;

public class HandshakeInterceptor extends HttpSessionHandshakeInterceptor{  
	  
    @Override  
    public boolean beforeHandshake(ServerHttpRequest request,  
            ServerHttpResponse response, WebSocketHandler wsHandler,  
            Map<String, Object> attributes) throws Exception {  
		if(request.getHeaders().containsKey("Sec-WebSocket-Extensions")) {
			request.getHeaders().set("Sec-WebSocket-Extensions", "permessage-deflate");
        }
		ServletServerHttpRequest serverRequest = (ServletServerHttpRequest) request;
		HttpSession session = serverRequest.getServletRequest().getSession(isCreateSession());
		attributes.put("httpsession", session);
        return super.beforeHandshake(request, response, wsHandler, attributes);  
    }  
  
    @Override  
    public void afterHandshake(ServerHttpRequest request,  
            ServerHttpResponse response, WebSocketHandler wsHandler,  
            Exception ex) {  
     
        super.afterHandshake(request, response, wsHandler, ex);  
    }  
  
}  

